My Datagrid is not binding all columns

[whidbey]

Hello frnds,

I have created a datagrid with the following code......

 
<asp:datagrid id="DataGrid1" BackColor="#ccccff" BorderColor="black" Width="750" Runat="server" AutoGenerateColumns="False" HeaderStyle-BackColor="#aaaadd" Font-Size="8pt" Font-Name="Verdana" CellSpacing="0" CellPadding="3" ShowFooter="True" GridLines="None" OnItemDataBound="Datagrid1_itemdataBound">
<Columns>
<asp:TemplateColumn HeaderText="S.No."></asp:TemplateColumn>
<asp:TemplateColumn HeaderText="Select">
<ItemTemplate>
<asp:CheckBox ID="checkbox1" Runat="server" Checked="False"></asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn HeaderText="BookId" DataField="BookId" Visible="true"></asp:BoundColumn>
<asp:BoundColumn HeaderText="CatId" DataField="CatId" Visible="true"></asp:BoundColumn>
<asp:BoundColumn HeaderText="Book Name" DataField="Title"></asp:BoundColumn>
<asp:BoundColumn HeaderText="Author" DataField="Author"></asp:BoundColumn>
<asp:BoundColumn HeaderText="Publisher" DataField="Publisher"></asp:BoundColumn>
<asp:BoundColumn HeaderText="Price" DataField="Price" DataFormatString="{0:c}"></asp:BoundColumn>
<asp:BoundColumn HeaderText="Quantity" DataField="Quantity"></asp:BoundColumn>
<asp:BoundColumn HeaderText="Category" DataField="CatName"></asp:BoundColumn>
</Columns>
</asp:datagrid>

The datagrid is bind with the database on button click event......

sub button1_click(sender as object,e as eventargs) 
    dim book as string 
    dim ctr as integer
    dim con as sqlconnection
    'dim cmd as sqlcommand
    dim da as sqldataadapter
    dim ds as dataset
    dim str as string
    book=txt1.text.toupper()
    cat=dropdownlist1.selectedvalue
 
    'response.write(book)
    ctr=integer.parse(cat)
    'response.write(ctr.tostring())
    str="server=WADHWA;user id=sa;pwd=;initial catalog=OnlineShoppingDatabase"
    con=new SqlConnection(str)
    con.open()
    'str="select bookdetails.catid , bookdetails.Title,bookdetails.author,bookdetails.publisher,bookdetails.price,bookdetails.quantity,CategDetails.CatName from bookdetails inner join categDetails  on CategDetails.catid= bookdetails.catid where bookdetails.title='" & txt1.text.toupper & "' and CategDetails.catid=" & dropdownlist1.selectedvalue
    str="select bookdetails.bookId,bookdetails.CatId,bookdetails.Title,bookdetails.author,bookdetails.publisher,bookdetails.price,bookdetails.quantity,CategDetails.CatName from bookdetails inner join categDetails  on CategDetails.catid= bookdetails.catid where bookdetails.title like '%" & txt1.text.toupper & "%' and CategDetails.catid=" & dropdownlist1.selectedvalue
    da=new SqlDataAdapter()
    da.selectcommand=new SqlCommand()
    da.selectcommand.connection=con
    da.selectcommand.commandtext=str
    ds=new DataSet
    da.fill(ds)
    response.write(ds.tables(0).columns.count.tostring())
    if ds.tables(0).rows.count =0 then
    ' datagrid1.datasource=ds
    'datagrid1.databind()
    'response.redirect("webform5.aspx")
    response.write("No Matches found")
    else
    Panel1.visible=true
    datagrid1.datasource=ds
    datagrid1.databind()
    end if
    con.close()
    end sub

In this code section,I have used a join query.There are two tables
BookDetails with fields(bookid,c atid,title,auth or,publisher,pr ice,quantity) and CategDetails with fields(catid,ca tname).

Now when i display the total number of columns bind with datagrid is only 6 but it has to bind 8 columns (bookid,catid,t itle,author,pub lisher,price,qu antity,catname respectively),w ith this following code :-

Response.write(Datagrid1.items.count.tostring) 

Please why its happening.is there any miscoded by me ????

[enreil]

Can you determine by their contents which columns are not getting bound?